The speaker addresses someone absent or dead, a thing, a place, or an idea, as if they could hear.
In Quincas Borba
After all, you won't fall on top of me
The beggar addresses the starry sky as if it could hear him, and the "hás de" treats the firmament on familiar terms, as an equal, in the serene humor of someone who owns nothing.
Chapters XLI to XLIX: The Night After the Garden, the beggar, in the speech the narrator imagines