Entity property named as default is not working

[freddie1129]

Description

If the entity property is named as default as String type, the property value cannot be saved into box.
We can use put operation to save the entity into box, but the value of the property named as default is always empty.

For example, if we define an entity as below

@Entity 
data class Note(
  @Id var id: Long = 0,
  var default: String? = null,
)

The value of the property default will always blank when read it from box, even though this property has non-blank value when written into the box.

Basic info

• ObjectBox version: 3.2.1, 3.5.1, just test these two version
• Reproducibility: Yes
• Device: [SAMSUNG SM-T630]
• OS: [e.g. Android 12]

To Reproduce
Simply change the property text's name to default in the example project to reproduce it.
https://github.com/objectbox/objectbox-examples/blob/main/android-app-kotlin/src/main/java/io/objectbox/example/kotlin/Note.kt

[greenrobot-team]

See #879 for a discussion on this.

A workaround is to use a name allowed in Java, and if required, add @NameInDb("default").

We should probably at least document this (e.g. in Getting Started).

[freddie1129]

Thanks, team.

It is reasonable that reserved keywords are not allowed. I also looked at #879, seems throwing out an error is impossible.
If that, please document it.
Thanks.

[greenrobot-team]

Re-opening until this is documented.

[greenrobot-team]

Added a note to https://docs.objectbox.io/getting-started#define-entity-classes.

Side-note: this probably can be solved in the future by using Kotlin Symbol Processing (#1075).