question: add a new child node to this node . concode_field_sep String name concode_elem_sep HashMap attributes concode_elem_sep TreeNode parent concode_elem_sep String body concode_elem_sep ArrayList children concode_field_sep TreeNode findChild concode_elem_sep String findAttribute concode_elem_sep String getName concode_elem_sep void addAttribute concode_elem_sep String getBody concode_elem_sep Iterator findAttributes concode_elem_sep String toString concode_elem_sep void toString concode_elem_sep Iterator findChildren concode_elem_sep Iterator findChildren concode_elem_sep void removeAttribute concode_elem_sep void setBody concode_elem_sep void removeNode
target: void function ( TreeNode arg0 ) { if ( children == null ) children = new ArrayList ( ) ; children . add ( arg0 ) ; }