Type guard that checks if an operation is of a certain subType known by Comunica. In case the subtype matches one known by Comunica, the type guard will conclude the operation contains all member Comunica expects from this operation-subtype
the operation that should be type checked
the subType we want to test against
a boolean indicating whether the subType equals the expected subType
Type guard that checks if an operation is of a certain subType known by Comunica. In case the subtype matches one known by Comunica, the type guard will conclude the operation contains all member Comunica expects from this operation-subtype