code: /*xml
  <module name="Checker">
    <module name="TreeWalker">
      <module name="SeparatorWrap">
        <property name="tokens" value="METHOD_REF"/>
        <property name="option" value="nl"/>
      </module>
    </module>
  </module>
  
  
  */
  
  package com.puppycrawl.tools.checkstyle.checks.whitespace.separatorwrap;
  // xdoc section -- start
  import java.util.Arrays;
  
  class Example2 {
    String[] stringArray = {"foo", "bar"};
  
    void fun() {
      // violation below ''::' should be on a new line'
      Arrays.sort(stringArray, String::
        compareToIgnoreCase);
      Arrays.sort(stringArray, String
        ::compareTo); // OK, because it is on a new line
    }
  }
  // xdoc section -- end
  