code: function() {
  			if (this.parent) {
  				var ix = this.parent.children.indexOf(this);
  				if (~ix) {
  					this.parent.children.splice(ix, 1);
  				}
  			}
  			
  			return this;
  		}
docs: Removes current node from parent‘s child list
  @returns {AbbreviationNode} Current node itself