gets the field by which entity of this group can be identified uniquely . concode_field_sep Map<String,String> fieldMappings concode_elem_sep String spaceIdentity concode_elem_sep String defaultUserName concode_elem_sep List<Map<String,Object>> entities concode_elem_sep String entityType concode_elem_sep List<EntityGroup> entityGroups concode_elem_sep String name concode_elem_sep String modelType concode_elem_sep String identityField concode_elem_sep String serviceMethod concode_field_sep void setName concode_elem_sep void setIdentityField concode_elem_sep String getName concode_elem_sep void setEntities concode_elem_sep String getEntityType concode_elem_sep void setModelType concode_elem_sep String getServiceMethod concode_elem_sep String getSpaceIdentity concode_elem_sep List<EntityGroup> getEntityGroups concode_elem_sep String getFieldMapping concode_elem_sep void setServiceMethod concode_elem_sep String getDefaultUserName concode_elem_sep void setEntityGroups concode_elem_sep void setFieldMappings concode_elem_sep String getModelType concode_elem_sep List<Map<String,Object>> getEntities concode_elem_sep void setSpaceIdentity concode_elem_sep Map<String,String> getFieldMappings concode_elem_sep void setDefaultUserName concode_elem_sep void setEntityType
String function ( ) { return identityField ; }