[Term Entry] add documentation for Dart Queue: .removeLast()

content/dart/concepts/queue/terms/removeLast/removeLast.md

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+---
+Title: '.removeLast()'
+Description: 'Removes and returns the last element from a queue.'
+Subjects:
+  - 'Code Foundations'
+  - 'Computer Science'
+Tags:
+  - 'Dart'
+  - 'Data Structures'
+  - 'Methods'
+  - 'Queues'
+CatalogContent:
+  - 'learn-dart'
+  - 'paths/computer-science'
+---
+
+The **`.removeLast()`** method removes and returns the last element of a `Queue`. If the queue is empty, it throws a `StateError`.
+
+## Syntax
+
+```pseudo
+queue.removeLast()
+```
+
+**Parameters:**
+
+This method takes no parameters.
+
+**Return value:**
+
+Returns the element that was removed from the end of the queue.
+
+## Example
+
+In the following example, the element `5` is removed from the queue using the `.removeLast()` method:
+
+```dart
+import 'dart:collection';
+
+void main() {
+  // Create a queue
+  Queue<int> queue = Queue.from([1, 2, 3, 4, 5]);
+
+  // Output the original queue
+  print('Original Queue: $queue');
+
+  // Remove the last element from the queue
+  queue.removeLast();
+
+  // Output the modified queue
+  print('Modified Queue: $queue');
+}
+```
+
+The above code results in the following output:
+
+```shell
+Original Queue: {1, 2, 3, 4, 5}
+Modified Queue: {1, 2, 3, 4}
+```