goja-core/src/main/java/goja/core/Validator.java
public static boolean isBlank(Object value) {
        if (value instanceof Collection) {
            return ((Collection) value).isEmpty();
        } else if (value instanceof String) {
            return "".equals(value.toString().trim());
        } else {
            return value == null;
        }
    }
public static boolean isBlank(Object value) {
        if (value instanceof Collection) {
            return ((Collection) value).isEmpty();
        } else if (value instanceof String) {
            return "".equals(value.toString().trim());
        } else {
            return value == null;
        }
    }
Blank

@param value value
@return boolean