Question: A JavaFX UI class has a button named 'btnOk' that needs to call a void method with no parameters named 'displayResults' when it is clicked.

A JavaFX UI class has a button named 'btnOk' that needs to call a void method with no parameters named 'displayResults' when it is clicked. Write the complete lambda-expression statement to set up the btnOk event handler to do this.

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