code: public FieldSource<JavaClassSource> addFieldTo(final JavaClassSource targetClass, final String fieldType,
              final String fieldName, String... annotations)
  
     {
        return addFieldTo(targetClass, fieldType, fieldName, Visibility.PRIVATE, true, true, annotations);
     }
docs: Adds the field with private visibility, including getter and setter, updating the toString()
  
  @param targetClass The class which the field will be added to
  @param fieldType The type of the field
  @param fieldName The name of the field
  @param annotations An optional list of annotations that will be added to the field
  @return The newly created field