Function isTwoValuesOperator

isTwoValuesOperator(operator): boolean
JMap.Layer.DynamicFilter.isTwoValuesOperator

Returns true if the operator require two values.

This function is safe, it throws nothing.
Parameters
- operator: JLAYER_DYNAMIC_FILTER_OPERATORS
  The operator to check
Returns boolean
Example
```
// returns true
JMap.Layer.DynamicFilter.isTwoValuesOperator("IS_IN_RANGE")

// returns false
JMap.Layer.DynamicFilter.isTwoValuesOperator("EQUALS")
```