“UMBRELLA CLAUSES” AS GUARANTEES OF THE RIGHT OF FOREIGN INVESTORS AND A MECHANISM FOR PROTECTING FOREIGN INVESTMENTS. Lex localis - Journal of Local Self-Government, [S. l.], v. 23, n. 11, p. 141–150, 2025. DOI: 10.52152/j801717. Disponível em: http://lex-localis.org/index.php/LexLocalis/article/view/801717. Acesso em: 11 oct. 2025.