authentication-method IKE phase1 SRX

[edit security ike proposal phase1-proposal]
lab@vSRX-VR# set authentication-method ?
Possible completions:
  dsa-signatures       DSA signatures
  ecdsa-signatures-256  ECDSA signatures (256 bit modulus)
  ecdsa-signatures-384  ECDSA signatures (384 bit modulus)
  pre-shared-keys      Preshared keys
  rsa-signatures       RSA signatures