field_info = field.field_info
    if isinstance(field_info, params.Form):
        try:
            # __version__ is available in both multiparts, and can be mocked
            from multipart import __version__  # type: ignore

            assert __version__
            try:
                # parse_options_header is only available in the right multipart

#define __GNUC__ 7
#define __GNUC_MINOR__ 3
#define __x86_64__ 1
"""
    static def clang = """#define __GNUC_MINOR__ 2
#define __GNUC_PATCHLEVEL__ 1
#define __GNUC__ 4
#define __VERSION__ "4.2.1 Compatible Apple LLVM 5.0 (clang-500.2.79)"
#define __clang__ 1
#define __clang_major__ 5
#define __clang_minor__ 0
#define __clang_patchlevel__ 0
#define __clang_version__ "5.0 (clang-500.2.79)"
"""