code: function markThisParameterAsUsed(node) {
              if (node.name) {
                  const variable = context
                      .getScope()
                      .variables.find(scopeVar => scopeVar.name === node.name);
  
                  if (variable) {
                      variable.eslintUsed = true;
                  }
              }
          }
docs: Mark this function parameter as used
  @param {Identifier} node The node currently being traversed
  @returns {void}