import re


def modify_flexlogger_paths(s: str) -> str:
    """Modify flexlogger.* paths in the given string to hide implementation modules.

    Examples:
        >>> # Basic usage
        >>> modify_flexlogger_paths("flexlogger.foo._abc.Abc")
        'flexlogger.foo.Abc'
        >>> # Modify all paths in the string
        >>> modify_flexlogger_paths(" flexlogger.f._abc.Abc flexlogger.f._xyz.Xyz ")
        ' flexlogger.f.Abc flexlogger.f.Xyz '
    """
    return re.sub(r"\._\w+.", ".", s)