Let's say I have an input for DESeq2 ready, such as:

library("airway")

data("airway")
se <- airway

se is an instance of class SummerizedExperiment. The object can be given to DESeq2 directly for analysis. But how do I use it for EdgeR? The user manual of EdgeR assumes a input matrix to construct DGEList. But how do I do it from an instance of SummerizedExperiment?