Model Mapper fails to configure with JDK 16

ModelMapperJDK16Test.java

package com.example;

import org.modelmapper.ModelMapper;
import org.modelmapper.AbstractCondition;
import org.modelmapper.PropertyMap;
import org.modelmapper.convention.MatchingStrategies;
import org.modelmapper.spi.MappingContext;

public class ModelMapperJDK16Test {
    public static class Foo {
        private int id;
        public int getId(){
            return this.id;
        }
    }

    public static class Bar {
        private int id;
        public void setId(int id){
            this.id = id;
        }
        public int getId(){
            return this.id;
        }
    }

    public ModelMapper configure(){
        ModelMapper modelMapper = new ModelMapper();
        modelMapper.addMappings(new PropertyMap<Foo, Bar>() {
            @Override
            protected void configure() {
                skip(destination.getId());
            }
        });
        
        return modelMapper;
    }

    public static void main(String[] args) {
        new ModelMapperJDK16Test().configure();
        System.out.println("all good!");
    }
}

mvn clean compile exec:java

[INFO] Scanning for projects...
[INFO] 
[INFO] ------------------< com.example:modelmapperjdk16test >------------------
[INFO] Building modelmapperjdk16test 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ modelmapperjdk16test ---
[INFO] Deleting /home/niklas/pwc-dev/modelmapper/target
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ modelmapperjdk16test ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory /home/niklas/pwc-dev/modelmapper/src/main/resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ modelmapperjdk16test ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to /home/niklas/pwc-dev/modelmapper/target/classes
[INFO] 
[INFO] --- exec-maven-plugin:3.0.0:java (default-cli) @ modelmapperjdk16test ---
[WARNING] 
org.modelmapper.ConfigurationException: ModelMapper configuration errors:

1) Failed to configure mappings

1 error
    at org.modelmapper.internal.Errors.throwConfigurationExceptionIfErrorsExist (Errors.java:241)
    at org.modelmapper.internal.ExplicitMappingBuilder.build (ExplicitMappingBuilder.java:252)
    at org.modelmapper.internal.ExplicitMappingBuilder.build (ExplicitMappingBuilder.java:104)
    at org.modelmapper.internal.TypeMapImpl.addMappings (TypeMapImpl.java:92)
    at org.modelmapper.internal.TypeMapStore.getOrCreate (TypeMapStore.java:124)
    at org.modelmapper.ModelMapper.addMappings (ModelMapper.java:113)
    at com.example.ModelMapperJDK16Test.configure (ModelMapperJDK16Test.java:29)
    at com.example.ModelMapperJDK16Test.main (ModelMapperJDK16Test.java:40)
    at org.codehaus.mojo.exec.ExecJavaMojo$1.run (ExecJavaMojo.java:254)
    at java.lang.Thread.run (Thread.java:831)
Caused by: java.lang.NullPointerException: Cannot read field "methodProxies" because "x0" is null
    at org.modelmapper.internal.ExplicitMappingBuilder$ExplicitMappingInterceptor.access$000 (ExplicitMappingBuilder.java:312)
    at org.modelmapper.internal.ExplicitMappingBuilder.createAccessorProxies (ExplicitMappingBuilder.java:295)
    at org.modelmapper.internal.ExplicitMappingBuilder.createProxies (ExplicitMappingBuilder.java:286)
    at org.modelmapper.internal.ExplicitMappingBuilder.visitPropertyMap (ExplicitMappingBuilder.java:274)
    at org.modelmapper.PropertyMap.configure (PropertyMap.java:386)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:78)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:567)
    at org.modelmapper.internal.ExplicitMappingBuilder.build (ExplicitMappingBuilder.java:235)
    at org.modelmapper.internal.ExplicitMappingBuilder.build (ExplicitMappingBuilder.java:104)
    at org.modelmapper.internal.TypeMapImpl.addMappings (TypeMapImpl.java:92)
    at org.modelmapper.internal.TypeMapStore.getOrCreate (TypeMapStore.java:124)
    at org.modelmapper.ModelMapper.addMappings (ModelMapper.java:113)
    at com.example.ModelMapperJDK16Test.configure (ModelMapperJDK16Test.java:29)
    at com.example.ModelMapperJDK16Test.main (ModelMapperJDK16Test.java:40)
    at org.codehaus.mojo.exec.ExecJavaMojo$1.run (ExecJavaMojo.java:254)
    at java.lang.Thread.run (Thread.java:831)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  1.762 s
[INFO] Finished at: 2021-04-19T09:34:09+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:3.0.0:java (default-cli) on project modelmapperjdk16test: An exception occured while executing the Java class. ModelMapper configuration errors:
[ERROR] 
[ERROR] 1) Failed to configure mappings
[ERROR] 
[ERROR] 1 error: Cannot read field "methodProxies" because "x0" is null
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://maven.apache.org/POM/4.0.0"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>modelmapperjdk16test</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <name>modelmapperjdk16test</name>
    <description>modelmapperjdk16test</description>

    <properties>
        <java.version>16</java.version>
        <maven.compiler.source>16</maven.compiler.source>
        <maven.compiler.target>16</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.modelmapper</groupId>
            <artifactId>modelmapper</artifactId>
            <version>2.4.0</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <version>3.0.0</version>
                <configuration>
                    <mainClass>com.example.ModelMapperJDK16Test</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>