SignatureInfo constructor
      
      SignatureInfo({})
     
    
    
Implementation
SignatureInfo({
  this.customerKmsKeyVersion,
  this.googleKeyAlgorithm,
  this.googlePublicKeyPem,
  this.serializedApprovalRequest,
  this.signature,
});
SignatureInfo({
  this.customerKmsKeyVersion,
  this.googleKeyAlgorithm,
  this.googlePublicKeyPem,
  this.serializedApprovalRequest,
  this.signature,
});