public Builder username(@Nullable Output<String> username) {
            $.username = username;
            return this;
        }
@param username username contains the name of the user that created the CertificateSigningRequest. Populated by the API server on creation and immutable.

@return builder
sdk/java/src/main/java/com/pulumi/kubernetes/certificates/v1/inputs/CertificateSigningRequestSpecArgs.java