Function Gff.fileVersion
GFF version stored in the GFF file. Usually "V3.2" Max width: 4 chars
					
			string fileVersion() @property const;
			
			
			void fileVersion
			(
			
			  in const(string) ver
			
			) @property;
					
				
			GFF version stored in the GFF file. Usually "V3.2" Max width: 4 chars
					
			string fileVersion() @property const;
			
			
			void fileVersion
			(
			
			  in const(string) ver
			
			) @property;