Function not

not(expression): OGCCondition
Creates a boolean NOT expression. It represents the negation of the expression.

Note: The Identifier is not allowed as an input for the NOT operator.
```
  FilterFactory.not(
    FilterFactory.eq(
      FilterFactory.property("city_name"),
      FilterFactory.literal("New York")
    )
  );
```
Parameters
- expression: Expression
  the expression to negate.
Returns OGCCondition
The Not expression.

Throws
Error if the parameter is not an expression