public static <T> void doIfBlank(final CharSequence input, final CheckedConsumer<T> trueFunction) {
        if (StringUtils.isBlank(input)) {
            doAndHandle(trueFunction);
        }
    }
Do if blank.

@param <T>          the type parameter
@param input        the input
@param trueFunction the true function
core/cas-server-core-util-api/src/main/java/org/apereo/cas/util/function/FunctionUtils.java