Function init_soft_bodies 

pub fn init_soft_bodies(
    commands: Commands<'_, '_>,
    context_links: RapierContextLinkResolver<'_, '_>,
    context_access: Query<'_, '_, (&mut RapierRigidBodySet, &mut RapierContextColliders)>,
    soft_bodies: Query<'_, '_, SoftBodyComponents<'_>, Without<RapierSoftBodyHandle>>,
)

System responsible for creating the Rapier soft bodies of new SoftBody components.