function cleanTree (oSymbol) {
			delete oSymbol.treeName;
			delete oSymbol.parent;
			if (oSymbol.children) {
				oSymbol.children.forEach(o => cleanTree(o));
			}
		}
function cleanTree (oSymbol) {
			delete oSymbol.treeName;
			delete oSymbol.parent;
			if (oSymbol.children) {
				oSymbol.children.forEach(o => cleanTree(o));
			}
		}
function cleanTree ( oSymbol ) { delete oSymbol . treeName ; delete oSymbol . parent ; if ( oSymbol . children ) { oSymbol . children . forEach ( o => cleanTree ( o ) ) ; } }
Clean tree - keep file size down
Clean tree - keep file size down
clean up the tree