suppress suggestions in string literals

pkg/analysis_server/lib/src/services/completion/local_computer.dart

Index: pkg/analysis_server/lib/src/services/completion/local_computer.dart
diff --git a/pkg/analysis_server/lib/src/services/completion/local_computer.dart b/pkg/analysis_server/lib/src/services/completion/local_computer.dart
index b7c83b532bf9b9f8a96d10a4d6c722d3bf67d17a..05b0ad41828a62333c13be1aff857693fb0fa063 100644
--- a/pkg/analysis_server/lib/src/services/completion/local_computer.dart
+++ b/pkg/analysis_server/lib/src/services/completion/local_computer.dart
@@ -85,11 +85,6 @@ class _LocalVisitor extends GeneralizingAstVisitor<dynamic> {
   }
 
   @override
-  visitCombinator(Combinator node) {
-    // Handled by ImportedComputer
-  }
-
-  @override
   visitCascadeExpression(CascadeExpression node) {
     Expression target = node.target;
     // This computer handles the expression
@@ -119,6 +114,11 @@ class _LocalVisitor extends GeneralizingAstVisitor<dynamic> {
   }
 
   @override
+  visitCombinator(Combinator node) {
+    // Handled by ImportedComputer
+  }
+
+  @override
   visitCompilationUnit(CompilationUnit node) {
     node.declarations.forEach((Declaration declaration) {
       if (declaration is ClassDeclaration) {
@@ -199,6 +199,11 @@ class _LocalVisitor extends GeneralizingAstVisitor<dynamic> {
   }
 
   @override
+  visitInterpolationExpression(InterpolationExpression node) {
+    visitNode(node);
+  }
+
+  @override
   visitMethodDeclaration(MethodDeclaration node) {
     _addParamListSuggestions(node.parameters);
     visitNode(node);
@@ -225,6 +230,11 @@ class _LocalVisitor extends GeneralizingAstVisitor<dynamic> {
   }
 
   @override
+  visitStringLiteral(StringLiteral node) {
+    // ignore
+  }
+
+  @override
   visitTypeName(TypeName node) {
     // If suggesting completions within a TypeName node
     // then limit suggestions to only types