def METHOD_NAME():
    import os
    VENDORED_ROOT = os.path.dirname(os.path.abspath(__file__))
    VENDORED_ROOT = os.path.join(VENDORED_ROOT, "robotframework_ls", "vendored")
    ret = []
    for dir_, _, files in os.walk(VENDORED_ROOT):
        for file_name in files:
            if file_name.lower().endswith(
                (
                    ".py",
                    ".pyd",
                    ".so",
                    ".exe",
                    ".dll",
                    ".dylib",
                    ".bat",
                    ".c",
                    ".cpp",
                    ".h",
                    ".hpp",
                    ".sh",
                    ".pxd",
                    ".pyx",
                    ".md",
                    ".robot",
                    "makefile",
                    "license",
                )
            ):
                rel_dir = os.path.relpath(dir_, VENDORED_ROOT)
                rel_file = os.path.join(rel_dir, file_name)
                ret.append(rel_file)
    assert len(ret) > 20, "Did not collect vendored files properly. Found: %s" % (ret,)
    return ret