RealFunction extends AbstractSymbolizerNode implements SeParameter, RealParameter { public Operators getOperator() { return op; } RealFunction(Operators operator);  RealFunction(String name);  RealFunction(FunctionType fcn);  RealFunction(JAXBElement<FunctionType> fcn); Operators getOperator(); List<RealParameter> getOperands(); RealParameter getOperand(int i); void addOperand(RealParameter operand); @Override Double getValue(ResultSet rs, long fid); @Override Double getValue(Map<String,Object> map); @Override String toString(); @Override void setContext(RealParameterContext ctx); @Override RealParameterContext getContext(); @Override int compareTo(Object o); @Override ParameterValueType getJAXBParameterValueType(); @Override JAXBElement<?> getJAXBExpressionType(); @Override List<SymbolizerNode> getChildren();  }
@Test public void testGetOperator() throws Exception { RealFunction op1 = new RealFunction("log"); assertTrue(op1.getOperator() == RealFunction.Operators.LOG); assertTrue(op1.getOperands().isEmpty()); }