| the Long story short this method: | |
| - changes: `nested.nested2.normalInner` | |
| - to `["nested", "nested.nested2", "nested.nested2.normalInner"]` | |
| So it can be used to search for the param in a {@link FlattenParams} object. | |
| Formally it changes path in "flatten" notation, to an Array of all possible | |
| keys, which could have searched property. | |
| When `skipArrayIndexes` is set to true it also it takes care of the arrays, which are | |
| separated by numbers (indexes). Then it: | |
| - changes: `nested.0.normalInner.1` | |
| - to: `nested.normalInner` | |
| Everything because when we look for a property of a given path it can be inside a | |
| mixed property. So first, we have to find top-level mixed property, and then, | |
| step by step, find inside each of them. |