Animator.MatchTarget
MatchTarget(matchPosition: Vector3, matchRotation: Quaternion, targetBodyPart: AvatarTarget, weightMask: MatchTargetWeightMask, startNormalizedTime: float, targetNormalizedTime: float = 1): void;
void MatchTarget(Vector3 matchPosition, Quaternion matchRotation, AvatarTarget targetBodyPart, MatchTargetWeightMask weightMask, float startNormalizedTime, float targetNormalizedTime = 1);
def MatchTarget(matchPosition as Vector3, matchRotation as Quaternion, targetBodyPart as AvatarTarget, weightMask as MatchTargetWeightMask, startNormalizedTime as float, targetNormalizedTime as float = 1) as void
Parameters

matchPosition The position we want the body part to reach.
matchRotation The rotation in which we want the body part to be.
targetBodyPart The body part that is involved in the match.
weightMask Structure that contains weights for matching position and rotation.
startNormalizedTime Start time within the animation clip (0 - beginning of clip, 1 - end of clip).
targetNormalizedTime End time within the animation clip (0 - beginning of clip, 1 - end of clip), values greater than 1 can be set to trigger a match after a certain number of loops. Ex: 2.3 means at 30% of 2nd loop.
Description

Automatically adjust the gameobject position and rotation so that the AvatarTarget reaches the matchPosition when the current state is at the specified progress.

Target matching only works on the base layer (index 0).