NSTextElementProvider
A protocol the text content manager and its concrete subclasses conform to, which defines the interface for interacting with custom content types of a text document.
Declaration
protocol NSTextElementProvider : NSObjectProtocolTopics
Accessing the range of the text element
Accessing and updating the text
enumerateTextElements(from:options:using:)NSTextLayoutFragment.EnumerationOptionslocation(_:offsetBy:)replaceContents(in:with:)