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initBlock(block) {
    // Check if groupTitles is present
    const groupTitles = block.dataset.grouptitles;
    const hasGroupTitles = groupTitles && groupTitles.trim() !== '';

    if (hasGroupTitles) {
        // Dropdown-container logic
        const dropdownContainer = block.querySelector('.dropdown-container');
        if (dropdownContainer) {
            const dropdownOptions = Array.from(dropdownContainer.querySelectorAll('.dropdown-option'));
            const dropdownButton = dropdownContainer.querySelector('.dropdown-button');

            dropdownButton.addEventListener('click', () => {
                this.toggleDropdown(dropdownContainer);
            });

            dropdownOptions.forEach(option => {
                option.addEventListener('click', (e) => {
                    this.selectDropdownOption(e, block);
                });
            });

            document.addEventListener('click', (event) => {
                if (!event.target.closest('.dropdown-container')) {
                    this.closeDropdown(dropdownContainer);
                }
            });

            const windowhashdata = window.location.hash ? window.location.hash : ''; // phpcs:ignore
            this.updateDropdown(dropdownOptions, windowhashdata);
            this.selectTabOnloadDropdown(block, windowhashdata);
        }
    } else {
        // Base case: performance-data__select logic
        const select = block.querySelector('.performance-data__select');
        const options = Array.from(select.querySelectorAll('option'));
        const windowhashdata = window.location.hash ? window.location.hash : ''; // phpcs:ignore

        select.addEventListener('change', (e) => this.selectTab(e, block));

        document.addEventListener('setGatingState', () => {
            this.selectedState = getSelectedStateFromLocalStorage();
            this.updateTabs(select, options, windowhashdata);
        });

        this.updateTabs(select, options);
        this.selectTabOnload(block, windowhashdata);

        block.dataset.initiallyHidden = false;

        if (block.querySelector('.is-sticky')) {
            this.positionSelectDropdown(block);
        }
    }
}