func (c *Container) IsEssential() bool {
	c.lock.RLock()
	defer c.lock.RUnlock()

	return c.Essential
}
func (c *Container) IsEssential() bool {
	c.lock.RLock()
	defer c.lock.RUnlock()

	return c.Essential
}
func ( c * Container ) IsEssential ( ) bool { c . lock . RLock ( ) defer c . lock . RUnlock ( ) return c . Essential }
// IsEssential returns whether the container is an essential container or not
IsEssential returns whether the container is an essential container or not