gistfile1.java

import com.google.gson.annotations.SerializedName;
 
public class GsonClass {
    private static final String EMPTY = "";
    
    @SerializedName("mandatory")
    private String mandatory;
    @SerializedName("optional")
    private String optional;
    
    public GsonClass() {
        optional = EMPTY;
    }
 
    public String getMandatory() {
        return mandatory;
    }
 
    public String getOptional() {
        return optional;
    }
}