Issue #2002866 by mcpuddin: Rename Views method has_default_argument() to hasDefaultArgument().

core/modules/views/lib/Drupal/views/Plugin/views/argument/ArgumentPluginBase.php

@@ -733,7 +733,7 @@ function default_default() {
   /**
    * Determine if the argument is set to provide a default argument.
    */
-  function has_default_argument() {
+  function hasDefaultArgument() {
     $info = $this->default_actions($this->options['default_action']);
     return !empty($info['has default argument']);
   }
@@ -1014,7 +1014,7 @@ function get_value() {
     // Clone ourselves so that we don't break things when we're really
     // processing the arguments.
     $argument = clone $this;
-    if (!isset($arg) && $argument->has_default_argument()) {
+    if (!isset($arg) && $argument->hasDefaultArgument()) {
       $arg = $argument->get_default_argument();
 
       // remember that this argument was computed, not passed on the URL.

core/modules/views/lib/Drupal/views/ViewExecutable.php

@@ -855,7 +855,7 @@ protected function _buildArguments() {
       $arg = isset($this->args[$position]) ? $this->args[$position] : NULL;
       $argument->position = $position;
 
-      if (isset($arg) || $argument->has_default_argument()) {
+      if (isset($arg) || $argument->hasDefaultArgument()) {
         if (!isset($arg)) {
           $arg = $argument->get_default_argument();
           // make sure default args get put back.