func Contents(r io.Reader) Option {
	return optionFunc(func(c *config) error {
		if c.contents != defaultConfig().contents {
			return &werror{"multiple contents", nil}
		}
		c.contents = r
		return nil
	})
}
// Contents specifies the contents to be written to the target file.
Contents specifies the contents to be written to the target file.
// Contents specifies the contents to be written to the target file .
func Contents(r io.Reader) Option {
	return optionFunc(func(c *config) error {
		if c.contents != defaultConfig().contents {
			return &werror{"multiple contents", nil}
		}
		c.contents = r
		return nil
	})
}
func Contents ( r io . Reader ) Option { return optionFunc ( func ( c * config ) error { if c . contents != defaultConfig ( ) . contents { return & werror { " " , nil } } c . contents = r return nil } ) }
Contents specifies the contents to be written to the target file.
Contents specifies the contents to be written to the target file .