static extractNestedIntentSections(fileContext, content) {
        if (fileContext === undefined
            || fileContext === null) {
                return [];
        }

        let nestedIntentSections = fileContext.paragraph()
            .map(x => x.nestedIntentSection())
            .filter(x => x !== undefined && x !== null);

        let nestedIntentSectionList = nestedIntentSections.map(x => new NestedIntentSection(x, content));

        return nestedIntentSectionList;
    }
@param {FileContext} fileContext
@param {string} content