@staticmethod<EOL><INDENT>def is_s3_uri(uri):<DEDENT>
return isinstance(uri, six.string_types) and uri.startswith("<STR_LIT>")<EOL>
Checks the uri and determines if it is a valid S3 Uri

Parameters
----------
uri str, required
    Uri to check

Returns
-------
bool
    Returns True if the uri given is an S3 uri, otherwise False