Operation.post constructor
const
Operation.post([])
Implementation
const Operation.post([
String? pathVariable1,
String? pathVariable2,
String? pathVariable3,
String? pathVariable4,
]) : method = "POST",
_pathVariable1 = pathVariable1,
_pathVariable2 = pathVariable2,
_pathVariable3 = pathVariable3,
_pathVariable4 = pathVariable4;