CodedNodeGraphGrid cng = client.getNodeGraph(
	                            org.LexGrid.LexBIG.DataModel.cagrid.CodingSchemeIdentification, 
	                            org.LexGrid.LexBIG.DataModel.Core.CodingSchemeVersionOrTag, 	
	                            org.LexGrid.LexBIG.DataModel.cagrid.RelationContainerIdentification);