+build go1.7

package credentials

import 
backgroundContext returns a context that will never be canceled, has no values, and no deadline. This context is used by the SDK to provide backwards compatibility with non-context API operations and functionality. Go 1.6 and before: This context function is equivalent to context.Background in the Go stdlib. Go 1.7 and later: The context returned will be the value returned by context.Background() See https://golang.org/pkg/context for more information on Contexts.