--- !ruby/object:RI::MethodDescription aliases: [] block_params: comment: - !ruby/struct:SM::Flow::P body: Fetches the index of a given child @param child the child to get the index of @return the index of the child, or nil if the object is not a child of this parent. full_name: REXML::Parent#index is_singleton: false name: index params: ( child ) visibility: public