Get/set int32 file attributes.
When setting file attributes, the file itself is returned so that method calls are chainable.
Name of the attribute.
Value to store.
Get/set user defined int32 file attributes.
When an attribute is not defined on the file, reading
it returns the empty value of the type, which is 0 in case of int32.
Int32 numbers range from -2,147,483,648 to +2,147,483,647.
Get/set value.
Getting undefined attribute.
Setting attribute on response file.