Operation constructor Null safety

const Operation(
  1. String method,
  2. [String? pathVariable1,
  3. String? pathVariable2,
  4. String? pathVariable3,
  5. String? pathVariable4]
)

Implementation

const Operation(this.method,
    [String? pathVariable1,
    String? pathVariable2,
    String? pathVariable3,
    String? pathVariable4])
    : _pathVariable1 = pathVariable1,
      _pathVariable2 = pathVariable2,
      _pathVariable3 = pathVariable3,
      _pathVariable4 = pathVariable4;