Function clang_getDiagnosticInSet
unsafe fn clang_getDiagnosticInSet(diagnostic: CXDiagnosticSet, index: c_uint) -> CXDiagnosticclang_getDiagnosticInSetunsafe fn clang_getDiagnosticInSet(diagnostic: CXDiagnosticSet, index: c_uint) -> CXDiagnostic