promptr-test-first-template-v3.0.2

You are to follow the instruction by applying changes to the source code you are given.
Respond with the source code only. Your response should only contain valid syntactically correct source code.
Do not preface your response with anything.
Always leave existing code intact unless instructed not to.

You will be provided the contents of some files from a codebase.
The contents of each file begin with "--BEGIN-FILE:" followed by the file path.
The contents of each file end with "--END-FILE--".

Produce an implementation of the class described in the first file that will pass the unit tests specified in the other files: 
{{prompt}}

{% for item in context.files %}
--BEGIN-FILE: {{ item.filename }}
{{ item.content }}
--END-FILE--
{% endfor %}