question: returns the header value concode_field_sep Properties headers concode_elem_sep String namespace concode_elem_sep IOCallback callback concode_elem_sep IOConnection connection concode_elem_sep URL url concode_field_sep void disconnect concode_elem_sep void setHeaders concode_elem_sep SocketIO addHeader concode_elem_sep String getTransport concode_elem_sep Properties getHeaders concode_elem_sep boolean isConnected concode_elem_sep IOCallback getCallback concode_elem_sep void reconnect concode_elem_sep String getNamespace concode_elem_sep boolean setAndConnect concode_elem_sep void setDefaultSSLSocketFactory concode_elem_sep void emit concode_elem_sep void emit concode_elem_sep void send concode_elem_sep void send concode_elem_sep void send concode_elem_sep void send concode_elem_sep void connect concode_elem_sep void connect concode_elem_sep void connect
target: String function ( String arg0 ) { if ( this . headers . contains ( arg0 ) ) return this . headers . getProperty ( arg0 ) ; return null ; }