core :: Text :: check_base64
self a well-formed Base64 entity ?Will return an Error otherwise with info on which part is erroneous.
	# Is `self` a well-formed Base64 entity ?
	#
	# Will return an Error otherwise with info on which part is erroneous.
	fun check_base64: nullable Error do return to_cstring.check_base64(byte_length)
					lib/base64/base64.nit:236,2--239,80
				
	redef fun check_base64 do return fast_cstring.check_base64(byte_length)
					lib/base64/base64.nit:249,2--72