code: public synchronized byte[] getBytes(
              int parameterIndex) throws SQLException {
  
          Object x = getColumnInType(parameterIndex, Type.SQL_VARBINARY);
  
          if (x == null) {
              return null;
          }
  
          return ((BinaryData) x).getBytes();
      }
docs: <!-- start generic documentation -->
  
  Retrieves the value of the designated JDBC <code>BINARY</code> or
  <code>VARBINARY</code> parameter as an array of <code>byte</code>
  values in the Java programming language.
  
  <!-- end generic documentation -->
  
  <!-- start release-specific documentation -->
  <div class="ReleaseSpecificDocumentation">
  <h3>HSQLDB-Specific Information:</h3> <p>
  
  HSQLDB supports this feature. <p>
  
  </div>
  <!-- end release-specific documentation -->
  @param parameterIndex the first parameter is 1, the second is 2,
  and so on
  @return the parameter value.  If the value is SQL <code>NULL</code>, the result
  is <code>null</code>.
  @exception SQLException if a database access error occurs or
  this method is called on a closed <code>CallableStatement</code>
  @see #setBytes