code: func (c *EnvConfig) Finalize() {
  	if c.Blacklist == nil {
  		c.Blacklist = []string{}
  	}
  
  	if c.Custom == nil {
  		c.Custom = []string{}
  	}
  
  	if c.Pristine == nil {
  		c.Pristine = Bool(false)
  	}
  
  	if c.Whitelist == nil {
  		c.Whitelist = []string{}
  	}
  }
docs: // Finalize ensures there no nil pointers.