// The class Note is used to handle note-related data and operations, including the creation, updating, and querying of notes.
public class Note {
    // Other member variables and constructors are omitted here.

    /**
     * Update the content of the note.
     * @param data The new content of the note.
     * @return Returns true if the update is successful, otherwise returns false.
     */
    public boolean setContent(String data) {
        // Existing code is omitted here.
    }

    /**
     * Get the content of the note in the form of a JSONObject.
     * @return Returns the JSONObject containing the note content, or null if the operation fails.
     */
    public JSONObject getContent() {
        // Existing code is omitted here.
    }

    /**
     * Set the parent ID of the note.
     * @param id The new parent ID of the note.
     */
    public void setParentId(long id) {
        // Existing code is omitted here.
    }

    /**
     * Set the GTASK ID of the note.
     * @param gid The new GTASK ID of the note.
     */
    public void setGtaskId(String gid) {
        // Existing code is omitted here.
    }

    /**
     * Set the sync ID of the note.
     * @param syncId The new sync ID of the note.
     */
    public void setSyncId(long syncId) {
        // Existing code is omitted here.
    }

    /**
     * Reset the local modification flag of the note.
     */
    public void resetLocalModified() {
        // Existing code is omitted here.
    }

    /**
     * Get the ID of the note.
     * @return Returns the ID of the note.
     */
    public long getId() {
        // Existing code is omitted here.
    }

    /**
     * Get the parent ID of the note.
     * @return Returns the parent ID of the note.
     */
    public long getParentId() {
        // Existing code is omitted here.
    }

    /**
     * Get the snippet of the note.
     * @return Returns the snippet of the note.
     */
    public String getSnippet() {
        // Existing code is omitted here.
    }

    /**
     * Check if the note type is a regular note.
     * @return Returns true if the note type is a regular note, otherwise returns false.
     */
    public boolean isNoteType() {
        // Existing code is omitted here.
    }

    /**
     * Commit the changes of the note.
     * @param validateVersion Whether to validate the version before updating.
     * @throws ActionFailureException If the note creation fails.
     * @throws IllegalStateException If the note ID is invalid or the update fails.
     */
    public void commit(boolean validateVersion) {
        // Existing code is omitted here.
    }
}