FBRowSetMetaData(XSQLVAR[] xsqlvars) { super(xsqlvars);
FBRowSetMetaData(XSQLVAR[] xsqlvars, FBRowSet rs) throws SQLException { super(xsqlvars, rs);
    FBRowSetMetaData(XSQLVAR[] xsqlvars) {        super(xsqlvars);    }