Issue 17024. Quick Fix to find imported library.

pkg/analysis_server/lib/src/services/correction/strings.dart

Index: pkg/analysis_server/lib/src/services/correction/strings.dart
diff --git a/pkg/analysis_server/lib/src/services/correction/strings.dart b/pkg/analysis_server/lib/src/services/correction/strings.dart
index ff5c49584d492648e089a36aee3fed70f2c61572..05644382c5311b49924165f6af2eabcc5a4d3742 100644
--- a/pkg/analysis_server/lib/src/services/correction/strings.dart
+++ b/pkg/analysis_server/lib/src/services/correction/strings.dart
@@ -125,3 +125,22 @@ String repeat(String s, int n) {
   }
   return sb.toString();
 }
+
+
+/**
+ * Gets the substring after the last occurrence of a separator.
+ * The separator is not returned.
+ */
+String substringAfterLast(String str, String separator) {
+  if (isEmpty(str)) {
+    return str;
+  }
+  if (isEmpty(separator)) {
+    return '';
+  }
+  int pos = str.lastIndexOf(separator);
+  if (pos == -1) {
+    return str;
+  }
+  return str.substring(pos + separator.length);
+}