Stream.readSome()
DESCRIPTION
Read some bytes from a stream. Blocks until at least 1 byte is read or the stream is closed or end of file is reached.
DECLARATION
public func readSome() throws -> Data
THROWS ERRORS
EOF:- if end of file is reached
STOPPED:- if the stream is stopped
OPERATION_IN_PROGRESS:- if another read is in progress
RETURNS
the data read