can I call a select method from UIResponderStandardEditActions?

I'm currently developing a simple text editing app for iPad using UITextView. I want to select parts of UITextView's text and highlight it with a default blue selection bar.

For example, I wrote this code to select the entire document.

[myTextView select: self]
myTextView.selectedRange = NSMakeRage(0, [textView.text length])

But "select" method is from UIResponderStandardEditActions protocol described as an informal protocol in the Apple documentation. http://developer.apple.com/library/ios/#documentation/uikit/reference/UIResponderStandardEditActions_Protocol/UIResponderStandardEditActions.html

I wonder whether it's legal to call this method directly because mos开发者_运维知识库t text editing apps based on UITextView in AppStore didn't have functionality to select parts of UITextView. So calling methods from UIResponderStandardEditActions seems illegal.

Thanks!

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If it is in the documentation, you can use it.