returns the number of direct children tree nodes . concode_field_sep Map<String,Tree<V>> children concode_elem_sep V value concode_field_sep void set concode_elem_sep Tree<V> getSubTree concode_elem_sep Tree<V> getChildTree concode_elem_sep V get concode_elem_sep V get concode_elem_sep Set<String> getChildrenNames concode_elem_sep void clear concode_elem_sep boolean hasValue concode_elem_sep String toString concode_elem_sep StringBuffer toString concode_elem_sep V delete concode_elem_sep void put concode_elem_sep V remove
int function ( ) { return children == null ? 0 : children . size ( ) ; }