public String getSectionProperty(String sectionName, String propertyName) {
        Section section = getSection(sectionName);
        return section != null ? section.get(propertyName) : null;
    }
Returns the value of the specified section property, or {@code null} if the section or property do not exist.

@param sectionName  the name of the section to retrieve to acquire the property value
@param propertyName the name of the section property for which to return the value
@return the value of the specified section property, or {@code null} if the section or property do not exist.
config/core/src/main/java/org/apache/shiro/config/Ini.java