code: def load_certs_from_env():
      tls_env_vars = [
          "RAY_TLS_SERVER_CERT",
          "RAY_TLS_SERVER_KEY",
          "RAY_TLS_CA_CERT",
      ]
      if any(v not in os.environ for v in tls_env_vars):
          raise RuntimeError(
              "If the environment variable RAY_USE_TLS is set to true "
              "then RAY_TLS_SERVER_CERT, RAY_TLS_SERVER_KEY and "
              "RAY_TLS_CA_CERT must also be set."
          )
  
      with open(os.environ["RAY_TLS_SERVER_CERT"], "rb") as f:
          server_cert_chain = f.read()
      with open(os.environ["RAY_TLS_SERVER_KEY"], "rb") as f:
          private_key = f.read()
      with open(os.environ["RAY_TLS_CA_CERT"], "rb") as f:
          ca_cert = f.read()
  
      return server_cert_chain, private_key, ca_cert
  
imports: import datetime
  import os
  import socket
label_desc: Use image node_id 3 for calling a global function with example usage: load_certs_from_env() and returns: server_cert_chain,  private_key,  ca_cert