input: def generate_employee_table(employee_data: List[dict]) -> str:
      """Generate an HTML page containing a table with employee data.
      Each employee's data is provided as a dictionary with keys 'Name', 'Job Title', 'Department', and 'Salary'.
  
      Example:
      for generate_employee_table([
          {'Name': 'John Doe', 'Job Title': 'Senior Developer', 'Department': 'IT', 'Salary': '$120,000'},
          {'Name': 'Jane Doe', 'Job Title': 'Manager', 'Department': 'Finance', 'Salary': '$95,000'},
          {'Name': 'Tim Smith', 'Job Title': 'Junior Developer', 'Department': 'IT', 'Salary': '$55,000'}
      ]) == '<html><head><title>Employee Data</title></head><body><table><thead><tr><th>Name</th><th>Job Title</th><th>Department</th><th>Salary</th></tr></thead><tbody><tr><td>John Doe</td><td>Senior Developer</td><td>IT</td><td>$120,000</td></tr><tr><td>Jane Doe</td><td>Manager</td><td>Finance</td><td>$95,000</td></tr><tr><td>Tim Smith</td><td>Junior Developer</td><td>IT</td><td>$55,000</td></tr></tbody></table></body></html>'
      """
output:     html = """
  <html>
  <head>
  <title>Employee Data</title>
  </head>
  <body>
  <table>
  <thead>
  <tr>
  <th>Name</th>
  <th>Job Title</th>
  <th>Department</th>
  <th>Salary</th>
  </tr>
  </thead>
  <tbody>
  """
      for employee in employee_data:
          html += f"""
  <tr>
  <td>{employee['Name']}</td>
  <td>{employee['Job Title']}</td>
  <td>{employee['Department']}</td>
  <td>{employee['Salary']}</td>
  </tr>
  """
      html += """
  </tbody>
  </table>
  </body>
  </html>
  """
      return html