input: from typing import Callable
  
  def port_java_to_python(java_code: str) -> Callable:
      """ Port a given Java code snippet to Python 3 and return the corresponding Python function.
      >>> port_java_to_python("public class Foo { public int foo( int a, int b ) { return a + b; } }")
      def foo(a, b): return a + b
      """
output:     import re
  
      def extract_function_body(java_code: str) -> str:
          pattern = r"public\s+\w+\s+(\w+)\s*\(([^)]*)\)\s*{([^}]*)}"
          match = re.search(pattern, java_code)
          if match:
              function_name = match.group(1)
              parameters = match.group(2).strip().replace("int ", "")
              body = match.group(3).strip()
              return function_name, parameters, body
          return None, None, None
  
      function_name, parameters, body = extract_function_body(java_code)
      if function_name and parameters and body:
          python_code = f"def {function_name}({parameters}):\n    return {body}"
          exec(python_code, globals())
          return globals()[function_name]
      return None