from typing import Any, Optional
from serial.serialutil import SerialBase


class PlatformSpecificBase:
    ...


class PlatformSpecific(PlatformSpecificBase):
    ...


class Serial(SerialBase, PlatformSpecific):
    """\
    Serial port class POSIX implementation. Serial port configuration is
    done with termios and fcntl. Runs on Linux and many other Un*x like
    systems.
    """

    def close(self) -> None:
        """Close port"""
        ...

    def read(self, size: Optional[int] = ...) -> bytes:
        """\
        Read size bytes from the serial port. If a timeout is set it may
        return less characters as requested. With no timeout it will block
        until the requested number of bytes is read.
        """
        ...

    def __enter__(self) -> Serial: ...

    def __exit__(self, *args: Any, **kwargs: Any) -> None: ...