Gradle scripts to generate a BOM and then consume that BOM

consume-bom.gradle

plugins {
    id "io.spring.dependency-management" version "1.0.0.RC2"
}

project.group = com.company
project.version = 1.0.0
project.ext.name = company-project

dependencyManagement {
    imports {
        mavenBom('com.company:company-bom:1.0.0') {
            bomProperty 'spring.version', '4.0.4.RELEASE'
        }
    }
}

generate-bom-with-properties.gradle

plugins {
    id "io.spring.dependency-management" version "1.0.0.RC2"
}

apply plugin: 'maven-publish'

project.group = com.company
project.version = 1.0.0
project.ext.name = company-bom

dependencyManagement {
     properties {
        property 'spring.version:4.1.1.RELEASE'
     }
     dependencies {
          dependency 'org.springframework:spring-core:${spring.version}'
          dependency group:'commons-logging', name:'commons-logging', version:'1.1.2'
     }
}

publishing {
    publications {
        mavenJava(MavenPublication) {
        }
    }
}

generate-bom.gradle

plugins {
    id "io.spring.dependency-management" version "1.0.0.RC2"
}

apply plugin: 'maven-publish'

project.group = com.company
project.version = 1.0.0
project.ext.name = company-bom

dependencyManagement {
     dependencies {
          dependency 'org.springframework:spring-core:${spring.version}' // where do I specify a default spring.version ?
          dependency group:'commons-logging', name:'commons-logging', version:'1.1.2'
     }
}

publishing {
    publications {
        mavenJava(MavenPublication) {
        }
    }
}