pasteClipboard 
  open fun pasteClipboard(clipboard: <Error class: unknown class>, overrideLocation: TextIter? = null, defaultEditable: Boolean)(source)
Pastes the contents of a clipboard.
If @override_location is null, the pasted text will be inserted at the cursor position, or the buffer selection will be replaced if the selection is non-empty.
Note: pasting is asynchronous, that is, we’ll ask for the paste data and return, and at some point later after the main loop runs, the paste data will be inserted.
Parameters
clipboard
the GdkClipboard to paste from
overrideLocation 
location to insert pasted text
defaultEditable 
whether the buffer is editable by default