Swift: Make implicit this receivers explicit

misc/codegen/templates/ql_class.mustache

@@ -50,9 +50,9 @@ module Generated {
      * transitively.
      */
     final {{name}} resolve() {
-      not exists(getResolveStep()) and result = this
+      not exists(this.getResolveStep()) and result = this
       or
-      result = getResolveStep().resolve()
+      result = this.getResolveStep().resolve()
     }
     {{/root}}
     {{#final}}
@@ -84,7 +84,7 @@ module Generated {
     {{/has_description}}
      */
     final {{type}} {{getter}}({{#is_indexed}}int index{{/is_indexed}}) {
-      result = get{{#is_unordered}}An{{/is_unordered}}Immediate{{singular}}({{#is_indexed}}index{{/is_indexed}}).resolve()
+      result = this.get{{#is_unordered}}An{{/is_unordered}}Immediate{{singular}}({{#is_indexed}}index{{/is_indexed}}).resolve()
     }
 
     {{/type_is_class}}
@@ -112,7 +112,7 @@ module Generated {
      * Holds if `{{getter}}({{#is_repeated}}index{{/is_repeated}})` exists.
      */
     final predicate has{{singular}}({{#is_repeated}}int index{{/is_repeated}}) {
-      exists({{getter}}({{#is_repeated}}index{{/is_repeated}}))
+      exists(this.{{getter}}({{#is_repeated}}index{{/is_repeated}}))
     }
     {{/is_optional}}
     {{#is_indexed}}
@@ -121,7 +121,7 @@ module Generated {
      * Gets any of the {{doc_plural}}.
      */
     final {{type}} {{indefinite_getter}}() {
-      result = {{getter}}(_)
+      result = this.{{getter}}(_)
     }
     {{^is_optional}}
 
@@ -129,7 +129,7 @@ module Generated {
      * Gets the number of {{doc_plural}}.
      */
     final int getNumberOf{{plural}}() {
-      result = count(int i | exists({{getter}}(i)))
+      result = count(int i | exists(this.{{getter}}(i)))
     }
     {{/is_optional}}
     {{/is_indexed}}
@@ -138,7 +138,7 @@ module Generated {
      * Gets the number of {{doc_plural}}.
      */
     final int getNumberOf{{plural}}() {
-      result = count({{getter}}())
+      result = count(this.{{getter}}())
     }
     {{/is_unordered}}
     {{/properties}}