The object that the camera wants to look at (the Aim target). The Aim component of the CinemachineComponent pipeline will refer to this target and orient the vcam in accordance with rules and settings that are provided to it. If this is null, then the vcam's Transform orientation will be used.

[TooltipAttribute("The object that the camera wants to look at (the Aim target).  If this is null, then the vcam's Transform orientation will define the camera's orientation.")]
[NoSaveDuringPlayAttribute]
public Transform m_LookAt

var m_LookAt