Source
factory ManagedDataModelException.invalidMetadata(
ManagedEntity entity, Symbol property, ManagedEntity destinationEntity) {
return new ManagedDataModelException(
"Relationship '${_getName(property)}' on "
"'${_getPersistentClassName(entity)}' "
"cannot both have 'ManagedColumnAttributes' and 'ManagedRelationship' metadata. "
"To add flags for indexing or nullability to a relationship, see the constructor "
"for 'ManagedRelationship'.");
}