The four rows for "assay" seem like an artefact of roxygen2, that from a user perspective would be more comprehensible as a single, detailed explanation, or at least kept together and with consistent language:
assay: Get the assay data for the default ANY class
assays: Get the assay data from each element in the ExperimentList
assay: Convenience function for the assay of the first element
assay: Obtain the specified assay from ExperimentList with a numeric index
assay: Get the specified assay from ExperimentList with a character index
The four rows for "assay" seem like an artefact of roxygen2, that from a user perspective would be more comprehensible as a single, detailed explanation, or at least kept together and with consistent language: