## ---- TxDb_Metadata, eval=FALSE--------------------------------------------
#  metadata <- AnnotationHubMetadata(
#      Description="Gene Annotation for Vitis vinifera",
#      Genome="IGGP12Xv0",
#      Species="Vitis vinifera",
#      SourceUrl="http://genomes.cribi.unipd.it/DATA/V2/V2.1/V2.1.gff3",
#      SourceLastModifiedDate=as.POSIXct("2014-04-17"),
#      SourceVersion="2.1",
#      RDataPath="community/tflutre/",
#      TaxonomyId=29760L,
#      Title="Vvinifera_CRIBI_IGGP12Xv0_V2.1.gff3.Rdata",
#      BiocVersion=package_version("3.3"),
#      Coordinate_1_based=TRUE,
#      DataProvider="CRIBI",
#      Maintainer="Timothée Flutre <timothee.flutre@supagro.inra.fr",
#      RDataClass="GRanges",
#      DispatchClass="GRanges",
#      SourceType="GFF",
#      RDataDateAdded=as.POSIXct(Sys.time()),
#      Recipe=NA_character_,
#      PreparerClass="None",
#      Tags=c("GFF", "CRIBI", "Gene", "Transcript", "Annotation"),
#      Notes="chrUn renamed to chrUkn"
#  )