errs = appendErrors(errs, check(len(src.RequestPrincipals) != 0, "From.RequestPrincipals"))
						errs = appendErrors(errs, check(len(src.NotRequestPrincipals) != 0, "From.NotRequestPrincipals"))
					}
				}
				for _, when := range rule.GetWhen() {
					if when == nil {
						errs = appendErrors(errs, fmt.Errorf("when field cannot be nil"))
						continue
					}

						},
					},
				},
			},
			valid: false,
		},
		{
			name: "NotRequestPrincipals-empty",
			in: &security_beta.AuthorizationPolicy{
				Rules: []*security_beta.Rule{
					{
						From: []*security_beta.Rule_From{
							{
								Source: &security_beta.Source{
									NotRequestPrincipals: []string{"p1", ""},
								},
							},
						},
					},
				},
			},

items: type: string type: array notNamespaces: description: Optional. items: type: string type: array notPrincipals: description: Optional. items: type: string type: array notRemoteIpBlocks: description: Optional. items: type: string type: array notRequestPrincipals: description: Optional. items: type: string type: array principals: description: Optional. items: type: string type: array remoteIpBlocks: description: Optional. items: type: string type: array requestPrincipals: description: Optional. items:...