ReturnChoice: Wrapper for return of EvaluateMethods()
In beyergroup/ADImpute: Adaptive Dropout Imputer (ADImpute)

ReturnChoice Adjusts the output of EvaluateMethods to a character vector or a SingleCellExperiment object. Helper function to ADImpute.

1	ReturnChoice(sce, choice)

`sce`	SingleCellExperiment; a SingleCellExperiment object if available; NULL otherwise
`choice`	character; best performing method in the training set for each gene

if sce is provided: returns a SingleCellExperiment with the best performing method per gene stored as row-features. Access via SingleCellExperiment::int_elementMetadata(sce)$ADImpute$methods.
if sce is not provided: returns a character with the best performing method in the training set for each gene