function checkForMetadata() {
				// V2 supports asynchronous loading of metadata
				// we have to register for the MetadataLoaded Event in case, the data is not loaded already
				if (!that._oModel.getServiceMetadata()) {
					that._oModel.attachMetadataLoaded(processMetadata);
				} else {
					// metadata already loaded
					processMetadata();
				}
			}
Check if the metadata is already available, if not defere the interpretation of the Metadata