The Dynkin-presentation conjecture for discriminant-complement groups

Let $f$ be a singular function with Milnor number $4mu$, and let a Dynkin diagram of $f$ have vertex cardinality $4mu$. Write $t_1,\cdots,t_4mu$ for generators indexed by its vertices, and let $I$ denote the vertex index set. Dynkin-presentation conjecture. The fundamental group of the discriminant complement of a versal unfolding of $f$ has the presentation

$$\left\langle t_i,\,1cleq icleq4mu\ \middle|\ \begin{array}{ll} t_i t_j t_i=t_j t_i t_j,& i<j\text{ joined by an edge of weight }pm1,\\ t_i t_j=t_j t_i,& i<j\text{ not joined by an edge},\\ t_i t_j t_k t_i=t_j t_k t_i t_j,& i<j<k\text{ in an edge triangle of weight product }-1 \end{array}\right\rangle.$$

Here the relations range over the indicated vertices in $I$. This is proposed as a preferred finite presentation and would determine the fundamental group from the Dynkin diagram; the source gives no resolution.