When generating API stubs with the scaffold utility using, e.g., `python -m localstack.aws.scaffold sns`,
the scaffold creates method names from operation names, which are ugly when acronyms (subsequent uppercase characters that belong together).

Example:
`CreateSMSSandboxPhoneNumber` -> `create_s_m_s_sandbox_phone_number`

it would be nicer to have `create_sms_sandbox_phone_number`

This is a limitation of this method: https://github.com/localstack/localstack/blob/1888e66b85d7e6a8ee457bc7a732984fcf7aa830/localstack/utils/common.py#L978-L979
"""Return whether the given file or directory exists and is non-empty (i.e., >0 bytes content)"""
    return path and disk_usage(path) > 0
def format_bytes(count: float, default: str = "n/a"):
    """Format a bytes number as a human-readable unit, e.g., 1.3GB or 21.53MB"""
    if not is_number(count):
        return default
    cnt = float(count)
    if cnt < 0:
        return default
    units = ("B", "KB", "MB", "GB", "TB")
    for unit in units:
        if cnt < 1000 or unit == units[-1]:
            
            return "%s%s" % (format_number(cnt, decimals=3), unit)
        cnt = cnt / 1000.0
    return count
def get_proxies() -> Dict[str, str]: