private Map<String, EntityMetadata> getEntityMetadataCol(ApplicationMetadata appMetadata, String persistenceUnit)
    {
        Metamodel metaModel = appMetadata.getMetamodel(persistenceUnit);
        Map<String, EntityMetadata> entityMetadataMap = ((MetamodelImpl) metaModel).getEntityMetadataMap();
        return entityMetadataMap;
    }
private Map < String , EntityMetadata > getEntityMetadataCol ( ApplicationMetadata appMetadata , String persistenceUnit ) { Metamodel metaModel = appMetadata . getMetamodel ( persistenceUnit ) ; Map < String , EntityMetadata > entityMetadataMap = ( ( MetamodelImpl ) metaModel ) . getEntityMetadataMap ( ) ; return entityMetadataMap ; }
Returns map of entity metdata {@link EntityMetadata}.

@param appMetadata
application metadata
@param persistenceUnit
persistence unit
@return map of entity metadata.