openxlsx: Where is the data located in the workbook object
The readWorkbook() function reads Workbook objects as data frames.
openxlsx::readWorkbook(wb)
# Sepal.Length Sepal.Width Petal.Length Petal.Width Species
# 1 5.1 3.5 1.4 0.2 setosa
# 2 4.9 3.0 1.4 0.2 setosa