Extract Academic Advisory (Ph.D. Thesis) from "Lattes' XML file.
getOrientacoesDoutorado(curriculo)
'Lattes' XML imported as `xml2::read_xml()`.
data frame
Curriculum without this information will return NULL.
if(interactive()){
# to import from one curriculum
# curriculo <- xml2::read_xml('file.xml')
# getOrientacoesDoutorado(curriculo)
}