Centric subgroup for a fusion system

Definition
Suppose $$P$$ is a group of prime power order and $$\mathcal{F}$$ is a fusion system on $$P$$. A subgroup $$Q$$ of $$P$$ is termed a $$\mathcal{F}$$-centric subgroup if for any isomorphism $$\varphi:Q \to R$$ in the category $$\mathcal{F}$$, $$R$$ is a defining ingredient::self-centralizing subgroup of $$P$$, i.e., $$C_P(R) = Z(R)$$.