Simplify GA[a].GA[b]+GA[b].GA[a] to 2 MT[a,b]

Question

Does a FeynCalc command exist, that simplifies the expression

GA[a].GA[b]+GA[b].GA[a]

to

2 MT[a,b]

I've tried Calc, DiracSimplify and DiracTrick to no avail.

If not, how can I do it with vanilla Mathematica?

edit for clarification purposes.

GA[mu] refers to the GammaMatrices (https://en.wikipedia.org/wiki/Gamma_matrices). There exists an anticommutator relation that allows the anticommuter of two GammaMatrices with Minkowksi indices $\mu$ and $\nu$ to be simplified to the metric tensor element $\eta^{\mu\nu}$.

$\{\gamma^\mu, \gamma^\nu\} = \gamma^\mu\gamma^\nu+\gamma^\nu\gamma^\mu = 2\eta^{\mu\nu}$