Documentation
// TODO: boundless spatial grid hash 3d

/**
 * The IndexManager struct manages multiple indexes.
 */
pub struct IndexManager {
    indexes: Vec<Index>,
}

impl IndexManager {
    /**
     * Constructs a new IndexManager object.
     */
    pub fn new() -> Self {
        IndexManager {
            indexes: Vec::new(),
        }
    }
}

/**
 * The Index struct represents an index.
 */
pub struct Index {
    // Add fields here if needed
}

// You can add methods to the Index struct here if needed