getMolecule<T> method
Gets a Molecule from the store.
key
the key of the Molecule to get.
Returns the Molecule with the key Molecule from the store if it exist and if the Molecule is of the type Molecule
Implementation
Molecule<T>? getMolecule<T>(String key) {
if (!_molecules.containsKey(key)) {
return null;
}
var molecule = _molecules[key];
if (molecule is! Molecule<T>) {
return null;
}
return _molecules[key] as Molecule<T>;
}