Checks if type_string is a valid GVariant type string. This call is equivalent to calling Variant.typeStringScan and confirming that the following character is a nul terminator.
a pointer to any string
TRUE if type_string is exactly one valid type string
Since 2.24
Checks if type_string is a valid GVariant type string. This call is equivalent to calling Variant.typeStringScan and confirming that the following character is a nul terminator.