anchor.diff:      : 'productRefGroup' '=' REFERENCE ';'
       ;
   
  +package_references
  +    : 'packageReferences' '=' reference_list ';'
  +    ;
  +
   project_dir_path
       : 'projectDirPath' '=' (QUOTED_STRING|NON_QUOTED_STRING) ';'
       ;
  
positive.code: 
  file_ref
      : 'fileRef' '=' REFERENCE ';'
      ;
  
  container_portal
  
negative.code: 
  xc_configuration_list_section
      : (xc_configuration_list)+
      ;
  
  xc_remote_swift_package_reference_section
      : (xc_remote_swift_package_reference)+
      ;
  
  xc_swift_package_product_dependency_section
      : (xc_swift_package_product_dependency)+
      ;
  
  xc_version_group_section
  