String fetchSpecificationName,
NSDictionary bindings) {
EOFetchSpecification fetchSpec = EOFetchSpecification.fetchSpecificationNamed(fetchSpecificationName,
entityName);
return fetchSpec != null && bindings != null ?
fetchSpec.fetchSpecificationWithQualifierBindings(bindings) : fetchSpec;
}
/**
* Utility method to generate a new primary key dictionary using
* the objects class properties. Use it when your PKs are class properties.