@CustomType.Setter
        public Builder warning(String warning) {
            if (warning == null) {
              throw new MissingRequiredPropertyException("ExpressionWarning", "warning");
            }
            this.warning = warning;
            return this;
        }
@return The content of type checking information in a human-readable form. Each line of the warning contains the type that the expression is checked against, followed by the type check error from the compiler.
sdk/java/src/main/java/com/pulumi/kubernetes/admissionregistration/v1alpha1/outputs/ExpressionWarning.java